The H sound is a voiceless or unvoiced sound. This means that your vocal chords do not vibrate when you make this sound. Instead, you use a puff of air to produce the sound. The H sound is the same in British and American English.
Is the h sound a fricative?
Because there is no other constriction to produce friction in the vocal tract in the languages they are familiar with, many phoneticians no longer consider [h] to be a fricative. ... Its phonation is voiceless, which means it is produced without vibrations of the vocal cords.